Last name Gueiler (Gueiler 
, Гейлер 
) , throughout the world, is a rare cognomen. The cognomen Gueiler is characteristic of Kazakhstan, where it is a rare surname, Russia, where it is a very rare surname, and Kyrgyzstan. In absolute terms, this name is the most popular in Russia, Ukraine, and Kazakhstan. Much less frequently, Gueiler is the forename as well as the last name.